The GE Lunar DPX and Prodigy Series DEXA Bone Densitometers with Mobile Kit provides a measurement of bone mineral density and fat and lean tissue mass. The values can then be compared to a reference population at the sole discretion of the physician.

Device Description

The GE Lunar DPX and Prodigy Series DEXA Bone Densitometers with Mobile Kit is a full-featured general purpose x-ray bone densitometer system. It consists of a scan table that provides x-ray source generation, x-ray detection and processing. The user interface includes a computer workstation. This modification will provide users the option of mounting the bone densitometer system into a vehicle through the use of a mechanical hardware mobile kit used during the installation of the scanner and by the Operator during transport.

AI/ML Overview

The provided text describes a 510(k) premarket notification for a medical device and thus does not contain information on dedicated "acceptance criteria" and a "study" to prove the device met those criteria, as one might find in a clinical trial or performance study report. Instead, it focuses on demonstrating substantial equivalence to a predicate device.

Here's an analysis based on the information provided, framed to address your questions where possible:

1. Table of Acceptance Criteria and Reported Device Performance

No explicit acceptance criteria with numerical targets are provided in the document. The performance is assessed through "in vitro precision and accuracy values" which were within "design specifications" (generic statement).

Acceptance Criteria Category	Reported Device Performance
Precision	"Within design specifications" (in vitro on phantoms)
Accuracy	"Within design specifications" (in vitro on phantoms)
Safety	Conforms with applicable medical device safety standards
Effectiveness	No specific numerical performance metrics are reported; deemed effective through substantial equivalence to predicate device.
Technological Characteristics	Comparable to predicate device.
Key Safety & Effectiveness Features	Comparable to predicate device.
Design, Construction, Materials	Similar to predicate device.
Intended Uses & Basic Operating Modes	Same as predicate device.

2. Sample Size Used for the Test Set and Data Provenance

Sample Size: Not applicable. The document states that "No clinical tests were required to establish safety or effectiveness." The testing mentioned was "in vitro precision and accuracy values ... computed through a series of tests on phantoms." The sample size (number of phantoms or tests conducted) is not specified.
Data Provenance: Not applicable, as no clinical human data was used for effectiveness testing. The "in vitro" tests were performed by the manufacturer, within the US (GE Medical Systems Lunar, Madison, WI).

3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts

Not applicable. The in vitro tests on phantoms do not involve human expert adjudication for ground truth.

4. Adjudication Method for the Test Set

Not applicable. No expert adjudication method was used given the nature of the in vitro phantom testing.

5. If a Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study Was Done, If So, What Was the Effect Size of How Much Human Readers Improve With AI vs Without AI Assistance

Not applicable. This device is a bone densitometer, not an AI-assisted diagnostic tool, and no MRMC study was performed or required.

6. If a Standalone (i.e., algorithm only without human-in-the-loop performance) Was Done

Not applicable. The device itself is the "standalone" component in the context of phantom testing, but this is not an AI algorithm assessment. The document clarifies that the device includes a "computer workstation" for processing, but this is inherent to DEXA technology, not an AI application subject to standalone algorithm evaluation in the modern sense.

7. The Type of Ground Truth Used

For the in vitro precision and accuracy tests, the "ground truth" would have been established by the known physical properties of the phantoms used and the expected output values for those phantoms, based on standard metrology. This is an objective, physical ground truth.

8. The Sample Size for the Training Set

Not applicable. This device does not use machine learning or AI that would require a "training set" in the conventional sense. The "design specifications" would have been developed through engineering and physics principles, not data-driven training.

9. How the Ground Truth for the Training Set Was Established

Not applicable, as there is no training set for an AI/ML algorithm.

Summary

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SEP 1 4 2007

K 072439

Special 510(k) Premarket Notification

GE Medical Systems Lunar – DPX and Prodigy Series DEXA Bone Densitometers with Mobile Kit August 28th, 2007

510 (k) Summary of Safety and Effectiveness Prepared in accordance with 21 CFR Part 807.92(c).

GE Healthcare

Image /page/0/Picture/7 description: The image shows the General Electric (GE) logo. The logo consists of the letters 'g' and 'e' intertwined within a circular border. The logo is in black and white, with the letters and border appearing in white against a black background.

Section a):

1.	Submitter:	GE Medical Systems Ultrasound and Primary Care Diagnostics, LLC division ofGeneral Electric CompanyGE Medical Systems Lunar (business name)726 Heartland TrailMadison, WI 53717
	Contact Person:	James P. RaskobSafety and Regulatory Engineering ManagerTelephone: 608-826-7425; Fax: 608-299-2132
	Date Prepared:	August 28th, 2007
2.	Device Name:	GE Lunar DPX and Prodigy Series DEXA Bone Densitometers with Mobile Kit,21 CFR 892.1170, 90-KGI
3.	Marketed Device:	DPX and Prodigy series bone densitometers: K915535 K982267 K983564 K000826 K001756 K001812 K011917 K023554 currently in commercialdistribution.
4.	Device Description:	The GE Lunar DPX and Prodigy Series DEXA Bone Densitometers with MobileKit is a full-featured general purpose x-ray bone densitometer system. Itconsists of a scan table that provides x-ray source generation, x-raydetection and processing. The user interface includes a computerworkstation. This modification will provide users the option of mounting thebone densitometer system into a vehicle through the use of a mechanicalhardware mobile kit used during the installation of the scanner and by theOperator during transport.
5.	Indications for Use:	The GE Lunar DPX and Prodigy Series DEXA Bone Densitometers with Mobile Kitprovides an estimate of bone mineral density and fat and lean tissue mass. Thevalues can then be compared to a reference population at the sole discretion of

the physician.

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Special 510(k) Premarket Notification

GE Medical Systems Lunar ~ DPX and Prodiqy Series DEXA Bone Densitometers with Mobile Kit August 28th, 2007

6. Comparison with

Predicate Device: The GE Lunar DPX and Prodigy Series DEXA Bone Densitometers with Mobile
Kit is of a comparable type and substantially equivalent to the current DPX and
Prodigy series bone densitometers. It has the same technological
characteristics, is comparable in key safety and effectiveness features, it
utilizes similar design, construction, and materials, and has the same intended
uses and basic operating modes as the predicate device.

Section b):

1. Non-clinical Tests: The device has been evaluated for safety, and has been found to conform with applicable medical device safety standards. In vitro precision and accuracy values were computed through a series of tests on phantoms and were within design specifications.
1. Clinical Tests: No clinical tests were required to establish safety or effectiveness.
1. Conclusion: Intended uses and other key features are consistent with previously cleared bone densitometers. The design and development process of the manufacturer conforms with 21 CFR 820 and ISO 13485 quality systems. The device conforms to applicable medical device safety standards and compliance was verified through independent evaluation with ongoing factory surveillance. The GE Lunar DPX and Prodigy Series DEXA Bone Densitometer with Mobile Kit is substantially equivalent to currently marketed devices. No new safety and effectiveness questions are raised with the GE Lunar DPX and Prodigy Series DEXA Bone Densitometers with Mobile Kit option.

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SEP 1 4 2007

Food and Drug Administration 9200 Corporate Blvd. Rockville MD 20850

Mr. James P. Raskob Safety and Regulatory Engineering Manager GE Medical Systems Lunar GE Healthcare 726 Heartland Trail MADISON WI 53717

Re: K072439

Trade/Device Name: GE Lunar DPX and Prodigy Series DEXA Bone Densitometer with Mobile Kit Regulation Number: 21 CFR 892.1190 Regulation Name: Bone densitometer Regulatory Class: II Product Code: KGI Dated: August 28, 2007 Received: August 30, 2007

Dear Mr. Raskob:

We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may. therefore, market the device, subject to the general controls provisions of the Act. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.

If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

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Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.

If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at one of the following numbers, based on the regulation number at the top of this letter:

21 CFR 876.xxx	(Gastroenterology/Renal/Urology	240-276-0115
21 CFR 884.xxx	(Obstetrics/Gynecology)	240-276-0115
21 CFR 894.xxx	(Radiology)	240-276-0120
Other		240-276-0100

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (240) 276-3150

or at its Internet address http://www.fda.gov/cdrl/industry/support/index.html.

Sincerely vours.

Nancy Chrogdon

Nancy C. Brogdon Director, Division of Reproductive. Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health

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Special 510{k} Premarket Notification GE Medical Systems Lunar – DPX and Prodigy Series DEXA Bone Densitometers with Mobile Kit August 28th, 2007

Attachment E

Indications for Use

The GE Lunar DPX and Prodigy Series DEXA Bone Densitometers with Mobile Kit provide a measurement of bone mineral density and fat and lean tissue mass. The values can then be compared to a reference population at the sole discretion of the physician.

Prescription Use XXX (Part 21 CFR 801 Subpart D) AND/OR

Over-The-Counter Use (21 CFR 801 Subpart C)

(P) EASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANQTHER PAGE IF NEEDED)

Concurrence of CDRH, Office of Device Evaluation (ODE)

Hulu Lewen

(Division Sign-Off)
Division of Reproductive, Abdominal and
Radiological Devices
510(k) Number K072439

Regulation Number and Section

§ 892.1170 Bone densitometer.

(a)
Identification. A bone densitometer is a device intended for medical purposes to measure bone density and mineral content by x-ray or gamma ray transmission measurements through the bone and adjacent tissues. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.(b)
Classification. Class II.